The 13 known moons are far fewer than the 60+ totals of Jupiter and Saturn, and most are likely not in their original forms. It is suspected that the one very large moon, Trit…on, was captured gravitationally and caused the complete disruption of the existing moon system. The current rings and moons contain substantial amounts of ice, and some may be fragments from collisions.

Neptune had the same number of moons in 1997 as it has now. No newones have formed nor have any been destroyed. However, more havebeen discovered. In 1997 we knew of 8 moons o…rbiting Neptune. Nowwe known of 14. The other 6 moons were there in 1997, but we didn'tknow about them.